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Motherboards => MSI AMD boards => Topic started by: WaltC on 13-May-08, 17:23:10

Title: K9A2 Platinum, Phenom 9850, & AMDLLD64.sys Problem
Post by: WaltC on 13-May-08, 17:23:10
After removing an AMD 5600 x2 from the K9A2 (I love this motherboard!), yesterday I  installed a Phenom 9850 (after updating the K9A2 bios to 1.4), and upon initial boot I blue-screened with a lock up with an error message that AMDLL64D.sys failed. I am running Vista Ultimate x64 with 4-gigs of ram, and the first thing I tried was removing the ram in 1-gig increments all the way back to 1-gig--but this had no effect and did not solve the problem.

Long story short, I booted into safe mode without a problem and simply deleted AMDLL64D.sys from Windows/system32, and then was able to reboot normally into Windows without a problem and everything seems to be running fine.  In the device manager under System Devices the "AMD low level driver" entry is yellow-tagged signifying a problem with the device.

I'm wondering if anyone else has encountered a problem with AMDLLD64.sys, and I'm also wondering whether this low level driver is necessary for anything important, or whether it was something relating only to the 5600 x2 previously installed.

One last dual-channel memory question: I'm assuming unganged is preferable to ganged since this is the bios default.  Any comments about that?

Thanks in advance!
Title: Re: K9A2 Platinum, Phenom 9850, & AMDLLD64.sys Problem
Post by: WaltC on 13-May-08, 20:15:09
OK, my thought now is that this device driver does not belong in my x64 Vista environment, and that when I get home I'll simply uninstall it via the device manager and forget about it...;)  The driver does not reinstall upon reboot so I'll bet that's all there is to it.

All right--any comments about unganged being superior to ganged mode?

Title: Re: K9A2 Platinum, Phenom 9850, & AMDLLD64.sys Problem
Post by: Svet on 13-May-08, 22:54:56
Good reading here: http://www.digit-life.com/articles3/mainboard/ddr2-yorkfield-phenom-page1.html
Also:
Title: Re: K9A2 Platinum, Phenom 9850, & AMDLLD64.sys Problem
Post by: WaltC on 13-May-08, 23:30:21
Thanks so much, Bosskiller.  Yes, a good read, indeed...;)  It looks like maybe ganged is marginally better for single-threaded performance whereas unganged is really the way to go for optimal multithreaded performance. The differences between single-threaded ganged and unganged are pretty small, though, so I will probably just stick with unganged.  Thanks again!...;)
 
Title: Re: K9A2 Platinum, Phenom 9850, & AMDLLD64.sys Problem
Post by: Svet on 14-May-08, 00:47:39
Yep :)
Title: Re: K9A2 Platinum, Phenom 9850, & AMDLLD64.sys Problem
Post by: WaltC on 28-May-08, 01:45:57
It thought that I should maybe let anyone who might've read this thread know that it was indeed a problem of running a device driver in Vista x64 that shouldn't have been there in the first place that caused my problem, and that removing the driver via the device manager fixed the problem permanently so that it has not reoccurred.   Case closed...;)